Rivermill Mascoma Hydro Dam

High HazardPoor ConditionEmergency Action Plan: Yes

Location

StateNew Hampshire
CountyGrafton
Nearest CityLEBANON
River/StreamMASCOMA RIVER
Coordinates43.63840, -72.25720

Physical Characteristics

Dam TypeConcrete
NID Height22 ft
Dam Height22 ft
Dam Length300 ft
Year Completed1920 (106 years old)

Storage & Hydraulics

NID Storage210 acre-ft
Max Storage210 acre-ft
Normal Storage170 acre-ft
Surface Area7 acres
Drainage Area188 sq mi

Ownership & Safety

PurposeHydroelectric
OwnerRIVERMILL HYDROELECTRIC INC
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection08/08/2018
Emergency Action PlanYes

Identifiers

NID IDNH00155
Federal IDNH00155
More InfoState Dam Safety Program

Nearby Dams

Lebanon Water Treatment Intake Dam 1.2 mi Significant Glen Road 2.3 mi Significant Boston Lot Lake Dam 2.5 mi Significant Wilder 3.1 mi High Lcs Settling Ponds 4 And 5 Dam 3.6 mi Low Mascoma Lake Dam 3.8 mi High Wright Reservoir 4.6 mi High Montcalm Golf Club Dam 4.9 mi Low Upper Reservoir Dam 5.3 mi High White Current 5.5 mi Low